A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5920-01-005-6389
NSN 6620-00-280-2874
NSN 5895-01-371-0450
NSN 5950-01-375-6652
NSN 5945-00-520-3482
NSN 2925-00-373-8837
NSN 5965-00-368-8204
NSN 5990-00-788-3829
NSN 5905-01-258-6847
NSN 5960-01-188-4558
NSN 6650-01-519-8545
NSN 6105-00-520-1238